This is a really over engineered yarn reel holder.
It can carry up to 28 yarn reels.
It fits to the IKEA Skadis boards.
To mount it you need addional:
2x bearing 608Z
12x screw 2x8
https://youtube.com/shorts/IpV2IbB3KYQ?feature=share
The author hasn't provided the model origin yet.